Rotary engine.



BEST AV CGPY J. E. VAN DEVENTER.

ROTARY ENGINE. APPLIUATLON FILED APE. 22. 1912.

Wr TNESSES A TraaMc'Y having' rotors each prov ROTARY EN GINE.

E donn llrlnnnnr VAN residing" at Buffalo, lili-ie County,

A ine-rie and f a u la ew lori:1 have invented Certain new useful ling'novenients in Rotary Engines, of. which tho ollfimfing is a full, Clear, and exl. il C l.

any

description.

invention relates to rotary engines and more nartirularly to engines with rotors, eat-h having a l posed and'intermeslnng tooth blades.

inf; invention, l 'i vail); to provide a rotary engine o5 the type ided with a plural of right-hand soirallj; disposed tooth ,blades and a pluralityv of lett-hand spirally disposed tooth blades, said lett-hand blades beingy at a different angle with the axes of the rotors than the said right-hand tooth thas orrnlueinn' a ditlerent thrust at l ot the rotors than at the otl'ier ond. 'i "Y ain able to at .ot my invention. .i igine lo machines or other mechani- Where it is desired to Counteroai a'pnlianms balance the induced end thrust in such machines or appliances. y

ln the specification and appended claims, the term fluid will be used as a general nessure medium, hat the en'- ie r gine i; especially adapted for the use or" obviously.. it is :inplirable to be anni or eoinnressed air. j nuid under pressure. lo be had to the accompanyorining.,y part ot this specifile characters ot' reference parts, throughout the several ing dran'A rat 9a., in I i ind ligure l s bottom View of my engine l the base broken away and with the .is taken on line -B of Ws the rotors in a diagrama. si matie manner.

n the drawing-s, the base of my engine is represented by the numeral 8. The rotor afts andi are rotatably mounted in iin, a citizen o the United States of*l TER, 0F BUFFA-B, NEVI YORK, SSGNQB, TO BUFFAL@ FFALO, NEVI YELL-A CORPORATION 0F NEAW YORK.

VILBLE COPY Speceation of Letters Eatent. .Patnlggd Auer g2) gg. Application med spin 22, 1912.

Serial No. 692,309.

third nof its length and a plurality of lefthand spirally disposed tooth blades 9 which extend across the rotor for the remainder of its lei'xgth. The rotor 7' is provided with va plurality of lett-,hand spirally disposed tooth blades 10, which extend across the rotor for substantially one-third of its length and a plurality of lett-hand spirally disposed tooth blades ll7 which extend across the rotor for the remainder of its length. The riQjht-lnind tooth bladesS of the rotor G are arranged to mesh with the left-hand tooth blades 10 of the rotor 'l and the lefthand blades 9 of the rotor 6 are arranged to mesh with the right-hand tooth blades 1l of the rotor 7. Buckets arethus 'formed be;

tween thek internieshing' tooth blades and' make possible the propulsion or' the rotors. As the tooth blades ot one rotor mesh with those of another rotor, transm Aon of rotation is secured between the rotors.l thus obviatinrj the necessity of employing auxiliary gears.

i2 is the rib of my engine vwhich is prefer-A ably an integral part ot the base 3. This rib disposed along' the entire length of the rotors@ and 7 and extends up in betmen the said rotors to the point of inter. section of their perinietors and is in conformity and bearing- Contact therewith. The niiuiber ot tooth blades in each rotor andthe angle which said tooth blades maire in the rotor shaft govern the extent to Whioh the said rib envolops the said rotors and it is only7 necessary that this rib extend around the rotors far enough so as to confine the fluid under pressure to any pair of meshing tooth blades, until the said pair of tooth blai" ai have ceased to mesh or until each bucket t'nied by the -intorinesliineI tooth blades ha developed .its full Cairaoity or volume. 'he rib, may if desired, be oontinaed around the rotors and substantially incase the saine. lli/'hen so forn'ied` the rib provides a casing` in which exhaust tluid will be confined and from 'which the saine may be carried to any desired place bysuitable piping.

Formed at the junction of each inteiineshing tooth blade 8 and 9 on the rotor ,6 and each interineshing tooth blade 10 and 11 on the rotor 7 is an angular pocket 13. Provided in the rib 12 is an inletv port 14 which is disposed near the peak of the rib and at a point in its length which isv oppor site to the pockets 13. rlhis port is disposed preferably in a horizontal plane and extends through Afrom one side of the rib to the other side. Thus when fluid under pressure enters the said port, it 4will be caused to impinge-on the tooth blades of each rotor at the same time. Connected with the said inlet port 14 is a port 15 which communicates Wtih a horizontal port- 16. This port 16 extends from the port 15, passes through the base 3 and is screwthreaded at its outer end, whereby suitable4 inlet piping 17 may be secured to said base.

By referring to the drawings, it will be clearly seen that the tooth blades 18 and 19 on the rotor-7 and the tooth blades 20 on the rotor 8 are in mesh and have formed between them a bucket 21. As thi` rotors are each provided With right and leftdiand tooth blades, two buckets will bc formed simultaneously but as each rotor is pr0 vided ivith a plurality ot tooth bladcs,the

iformation of but one double-sided bucket is started. The fluid undei pressure is made to inipinge upon the tooth blades forming such bucket. Thus an impact action is secured, which causes the rotors to revolve. fis the rotors continue to revolve, the capacity or volume of said bucket is `greatly increased, due to the recession, toward the ends ofthe rotors of the points of mcsl of the said tooth blades forming tinI said buckets. -As the rotors continue to rwolve, by reason of the pressurewithin thi said buckets, the tooth blades forming the said bucket, when passi-ng the inlet port 1. cut ott thc'supply from said bucket. Afti r the supply has been cut oit from any one bucket,

. the fiuid contained therein Will expano and at the same time exert its expansive eiergy against the points of mesh or until it has developed its full volume or capacity, or until'the tooth blades forming lsaid lncket cease to meshf Obviously, the ratio of ex-` parisien ot my engine may be chang-d by changing the 'size and location of the inlet port, or the angle and length ofthe spirally disposed interineshing tooth blades.

As hereinbet'ore stated', the right-hand and lett-hand tooth blades meet and join and thus form angular lpockets'. As the fluid' under pressure is admitted at this point, it

will be seen ,that leakage of, fluid at the junction of the rotors is made impossible. The onll place in my en'fine Where leak .ge of fini@ may occur, is i et( the rotors and the rib,`,;`out this may be reduced to a minimum as it is possible' to' malte a very good and practically non-leak etiveen the per. meterl ing contact or bearing between said perimeter and the rib. The leakage of fluid in my engine is thus reduced toa minimum, which Amakes the eilicicncy thereof very high.

Obviously, some modifications of my in- 7G vention as herein shown and described, may

be made without departing from tli'e spirit of my invent-ion or the scope of the append led claims, and l do not wish to be limited toY the exact embodiment hcreip shown and described.

Having thus described my invention, what I claim is:

1. In a rotary engine, the combination of two ormore internieshing and engaging rotors, shafts secured in said rotors and rotatably mounted in suitable hearings, each of said rotors having a series of riglit-hand spirally disposed tooth blades starting from a plurality of circumferential points on said rotors'located at one end thereof and eX- tending toward the center of said rotors, and a series of left-hand spit-ally disposed tooth blades starting from a plurality of circumferential points on said rotors located at the opposite end thereof and extending toward the center of said rotors, one series of said tooth blades on cach rotor making a greater angle with the axis of its rotor than the other of said series of tooth blades on the same rotor, the inner ends of said right and' left-handvtooth bladesl of each rotor' meshing and joining and thereby forming angular pockets, and a fluid inlet provided with a port for conducting tluid under pres' 100 sure to said rotors, saidport being solocated and formed that said conducted Huid Will befiinpinged Within the angular pockl ets formed by said toot-h blades.

2. In a rotary engine, the combination of two or more intermeshing and engaging ro tors, shafts secured in said rotors andro-A tatably mounted in suitable bearings, each rotor having a series of right-hand spirally disposed tooth blades starting from a -pluf rality of circumferential points on said rotors located at one end thereof and ext-ending toward the center of said rotors and a series of left-hand spirally disposed tooth blades starting yfrom a plurality of'cir- 115 cuinfei'ential points on said rotors located at the opposite ends and extending. .toward the center of said rotors, one series of said tooth blades on eachv rotor making a greater angle with the axis of its rotor than the otherkof said series of tooth blades on the same rotor,.said right-hand and left-hand spirally disposed tooth'blades ot' one rotor meshing, respectively, with said left-hand tooth 12,5

'said rotors, said 'port being soi-acated and 130 formed that eonductefl [foilL will he implng'ed it-7 '1n Seid 'ets ermee h 'y seid tooth blades. A

3. ln i'otoiy engin-Ll the Combination of two or noie 'intermeehi c' one engaging rotors; Shafts seein-ed in seid rotors und iotatebljf mounted in suitable healing@7 each of seid i'otms lio/ving e seiiee oit glit-hnnd spi-rally diepoeed tooth blades stel-ting fiom a .plurality et ciioiunitlerential points onziid rotors located et' oncendthereof and eX- tencling toward the center of seid mtoie and :i series of lett-liend spit-olly dieposed tooth blades storting-:trom n pluiniity of circum- 5 ferentiel points on said roloie located at the opposite end theie it' and extending" towud. the Gente? oit series ojf Said tooth bleues u gieoler its than the j ot tooth Blades on the innel ende ot' seid right- :nd tooth blades ot each 4 and gioiniiigj and thereby ffuloi' pockets, seid iiglit-hnnd spii'illy diel oee'l tooth lolndes oeh ely, with ,he and -luind Spiiefy die:- "ooth ot another' rotor?l Whereby buckets one formed between the meshing' ot' said fotoney and :i fluid inlet o no?" tot conducting fluid n S. Sltltl o: A i

ico ini endtheieot' and extending p e oegter sind rotors, one Series ot Suidue' L on each rotoi mailing a ini viro ook iluio i ,e and zig-aine iid tooth Sfzhfrii'itizilly inlrtho (liiection of rotation oil: i .o otoie.

ln rotary confine: the combination of C 1 two or more mtei'uiesning' and. enge hiotoi'e, shafts scoured in Suid rotore not 6.5 tetu'oly mounted in Suitable loefiifings ,ovopee the same roto', thefinnei ends ot' said right and left'liand tooth bladesot each iotor meshing and joining and thereby toi-ming angular pocketsj and i rib extending substantially parallel to the :ities of said rotors and in contact' with the peiimetei's of said ioto's foi' et least a.- poition of their peripheries, said iifo being provided With a .po't for conducting tluid under piessure to seid angular poelets ot seid rotors.

t3. ln a rotary engine, the combination of 'o or moi-e intermeshing and engaging ns, shafts secured in Suid rotors und rotatably mounted in Suitable bearings, each luid rotors having n series of right-hund i filly disposed tooth blades Starting trom plurality ot' circumferential points' on sind .otono located at one end ther-ot und extendtowozd the center of said wytoie.v end e .iiesiof left-hand spiially disposed tooth ui-:los starting from n plurality ot oil-oumferentiol points on said rotors located at the opposite endthei'eot and extending toward the cento;` of seid rotors,` one Series of said tooth blades on each ,rotor mul ing.,r o. greater ongle with the axis ot its rotor than the other of Seid series of tooth blades: on the rotor, the inner ends'ot' seid iight midlett-lmncl tooth .blades of cach roto: meshing and joining* und tluueliy toiiuing zingulsiif pockets, und nv iih extending sul:-

stnntiolly parallel tothe axes ot Suid roto-rs and in Contact Twith the perimeteis ot .Quid notois for at leunt u portion o'llthcir pei-iphei'ieS7 Said ril) Going provided with lutciul pueeuges lending' into suit. poolgete. u'luuohv the conducted fluid impacts in fliid pockets :ind against Seid tooth blades siibetontiully in the direction of rotation of `uid rotors.

7. ln e rotary engine, the combination of two or more intcimcehino' and engaging 10- tors7 shafts cuneo in seid i'otore und rotaialoly mount-o in suitable hearings, ouch rotor disi'iosefl tooth loledee starting from o series of circumferential points on said rotors located et one end thereof und extending toward the center ot Suid rotors; and a series ot vleft-hand spii'ully disposed-tooth blades storting from a plurality of circumferential points on said. rotors located at thelopposite ends and extending toward the centei of said having ny plurality of right-hand spirully pea rib extending substantially parallel to the axes ol said rotors in contact with the perinr eters ot' said rotors for at. least a portion oiE their pcriphcrics, said rib being provided with a port for conducting fluid under pressure to said buckets of said rotors.

8. ln a rotary engine, the coinln'ination of' two or more interincshino,n and engaging'retors, shafts secured in said rotors and rotatably mounted in suitable bearings, each rtor haring;` a series ot right-hand spirally disposed tooth blades st arting from a plurality of circumferential points on .saidrotors located. at one end thereof and extendr ing toward t-hc center of said rotors and a series ot' lett-hand,spirally disposed tooth blades starting` Yfrom a plurality of circumferential points on said rotors located at the opposite ends and extending,Y toward the cere ter of said rotors, one series ot said tooth blades on cach rotor nniliiner a greater angle with the axis of its rotor than the other of said series ottooth blades on the saine rotor,

said right-hand and left-hand spirally disposed tooth blades of one rotor meshing, re-

spectively, with saidlett-hand. and right-- 'hand spirally disposed tooth blades of another rotor, whereby buckets are formed between the meshingr tooth blades ot said ro tors, and a rib extending substhntially parallel to the axes oit said rotors and in contact with the pcriineters of said rotors for at least a portion of their periphcries, said rib being; provided with lat-oral passages leading; into said pockets,wherel y the conducted fluid impacts in said buckets -and against said Vtooth blades substantially in the 'direction ot rotation o'l said rotors.

S). ln a rotary engine, the conibinatii'in of two or. more intcrnicshing and engaging' rotors4 shafts secured in said rotors and rotatablyy mounted in suitable bearings, each ot said rotorshavin series ot` right-hand spi rally i z, tooth blades starting;l 'from a plurality ot V-jeunitercntial points on said rotors located at one end thereof and eXtending toward tl'A con ter ot said rotors, and a not/doen series of lett-hand spirally disposed tooth blades starting from a plurality of circum erential points-on said rotors located at the opposite end thereof and extending toward the center of said rotors, one series of said tooth blades on each rotor making a greater angle `with the axis of Aits rotor than the other ot said series of tooth blades on the same rotor, the inner ends ot said right and left-hand tooth blades of each rotor meshing and joining and thereby forming angular pockets, and a fluid inlet .provided with a port so arranged that the admission of fluid under 'pressure into any pair of meshing tooth blades is cut off by the succeeding meshing tooth blades before the said first mentioned tooth blades have developed 'their toll capacity.

it). ln a rotary engine, the combination of two or more intermeshing and engaging rotors, sbatte secured in said rotors and rotatably mounted in suitable bearings, each rotor. having a series o't` right-hand spirally disposed tooth blades stzirtinjg,` from a plurality ot circointerential points en said rotors lo cated at one ond thereof and extending toward the center ot said rotors and a series of left hand spirally disposed tooth blades starting from a plurality of circumferential points on said rotors located at the opposite ends and extending toward the center of said rotors, one series of said tooth blades on each rotor making' a greater angle with the axis of its rotor than the other oit said series ot tooth blades on the saine rotor, said righthand and lett-hand spirally disposed tooth blades o't one rot-or meshing, respectively, with said'leJft-hand and right-hand spirally disposed tooth whereby buckets are formed between the meshing' tooth blades ol said rotors and a rib extending substantially parallel to the axes o l said rotors and in contact with the perimeters ot' said rotors for at least a portion of their pcripheries, said rib being provided with a port so arranged that the admission blades of another rotor,4

ot' luid under pressure into any/,bucket is eut. o tl'l by the succeeding; bucket before the first ment ioned bucket has developed its full volume.

WG ln testimony whereof, have hereunto.

' lllpnis,

ll. Kimber. 

